ISO 12570:2000/Amd 2:2018

Overview

ISO 12570:2000/Amd 2:2018 is an important amendment to the international standard ISO 12570:2000, which focuses on the hygrothermal performance of building materials and products. Specifically, this amendment updates the methodology for the determination of moisture content by drying at elevated temperature. Issued by the International Organization for Standardization (ISO), this document forms part of the technical guidance managed by ISO Technical Committee ISO/TC 163, which specializes in thermal performance and energy use within the built environment.

The amendment refines key calculation practices, including an updated empirical equation for determining the density of water at varying temperatures, enhancing accuracy in moisture content measurement. This standard plays a critical role in assessing the moisture-related properties that affect the longevity, safety, and energy efficiency of construction materials.

Key Topics

• Moisture Content Determination
  The standard provides guidance on accurately determining moisture content in building materials through drying at elevated temperatures. Controlling moisture levels is essential to prevent material degradation, mold growth, and loss of insulation performance.

• Updated Water Density Equation
  Amendment 2 introduces a revised empirical formula to calculate water density (ρw) at different temperatures (θ °C). This refinement improves precision in moisture content calculations involved in drying methods.

• Hygrothermal Performance Assessment
  The standard supports a systematic approach to evaluating how moisture interacts with thermal properties of building products, influencing durability and indoor environmental quality.

• Technical Committee Governance
  Developed by ISO/TC 163 and Subcommittee SC 1, the document aligns with ISO/IEC Directives Part 1 and Part 2 editorial rules to ensure consistency, quality, and applicability in international contexts.

Applications

ISO 12570:2000/Amd 2:2018 is vital for professionals involved in:

• Construction Material Testing
  Laboratories and manufacturers use this standard to accurately measure moisture content in materials such as concrete, wood, insulation products, and masonry, ensuring compliance with performance criteria.

• Building Quality Control
  Architects, engineers, and building inspectors apply this standard to verify material conditions during construction or renovation, preventing moisture-related issues.

• Research and Development
  Material scientists leverage the refined methodology to innovate durable and energy-efficient building products that maintain optimal hygrothermal performance.

• Regulation and Certification
  Regulatory bodies may reference this standard for establishing thresholds in building codes and certification programs focused on sustainable construction and healthy indoor environments.

Related Standards

To fully understand and implement moisture content determination within the broader scope of hygrothermal performance, the following ISO standards are often referenced alongside ISO 12570:2000/Amd 2:2018:

• ISO 7345 - Thermal insulation - Physical quantities and definitions
• ISO 10456 - Building materials and products - Hygrothermal properties - Tabulated design values and procedures for determining declared and design thermal values
• ISO 13788 - Hygrothermal performance of building components and building elements - Internal surface temperature to avoid critical surface humidity and interstitial condensation - Calculation methods
• ISO 9869 - Thermal insulation - Building elements - In-situ measurement of thermal resistance and thermal transmittance

Together, these standards provide a comprehensive framework for managing moisture and thermal properties in buildings, promoting sustainability, durability, and occupant comfort.

For more information and access to the full standard document, visit the official ISO website at www.iso.org.